Champion Steven will be closely involved with you while you explore Hoenn. This mysterious young man has a great interest in collecting rare stones. He's in pursuit of the true story behind the mysteries that lie at the heart of the stories in Pokémon Omega Ruby and Pokémon Alpha Sapphire : the origins of Mega Evolution and the Legendary Pokémon.
If you manage to defeat the Elite Four, the summit of the Pokémon League will be your next goal, where you must challenge Steven. As the Champion of the Hoenn region's Pokémon League, Steven uses Steel-type Pokémon.
Steven is also a user of Mega Evolution. He wears a Mega Stickpin, which bears a Key Stone, one of the mysterious stones needed for a Pokémon to Mega Evolve.